| 1 | The first dorsal fin is black at the front. | |
| 2 | Its dorsal fin was in front of me. I was screaming for help. | |
| 3 | His dorsal fin was down and his huge pectorals were spread wide. | |
| 4 | We know this because we can distinguish the male by their large dorsal fin . | |
| 5 | Its sail-like first dorsal fin provides stability while swimming. |